sulcus
Americannoun
plural
sulci-
a furrow or groove.
-
Anatomy. a groove or fissure, especially a fissure between two convolutions of the brain.
noun
-
a linear groove, furrow, or slight depression
-
any of the narrow grooves on the surface of the brain that mark the cerebral convolutions Compare fissure
Other Word Forms
- subsulcus noun
Etymology
Origin of sulcus
1655–65; Latin: furrow
Compare meaning
How does sulcus compare to similar and commonly confused words? Explore the most common comparisons:
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
These patterns were based on sulcus depth and cortical thickness, which describe the folding of the brain surface and the thickness of the brain's outer layer.
From Science Daily • Jan. 4, 2026
"You can think about the intraparietal sulcus as having two knobs on a radio dial: one that adjusts focusing and one that adjusts filtering," Ritz said.
From Science Daily • Mar. 8, 2024
This area, near the lateral cerebral sulcus, is an important region for the processing of acoustic energy so that it can be distinguished as speech, music, or noise.
From Textbooks • Jan. 1, 2015
The anterior midline is marked by the anterior median fissure, and the posterior midline is marked by the posterior median sulcus.
From Textbooks • Jun. 19, 2013
On the left side gyri and sulci were few and simple but typical, the external perpendicular occipital sulcus being interrupted by a broad crossing gyrus.
From Degeneracy Its Causes, Signs and Results by Talbot, Eugene S.
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
